@developerbayman
Feel free to ask about that in the next Q&A. I think folders in contentHub could be a thing.
In the mean time I think you can add access to a folder in your apparmor profile (like the Documents folder). Your apps will have to be revised before publishing in the openStore but I guess it should be ok, if everything is transparent.
I doubt general access to folders will be granted to all apps, as it would break the whole isolation model that currently exists.